<?php

/**
 * Allows admin to edit all auth plugin settings.
 *
 * JH: copied and Hax0rd from admin/enrol.php and admin/filters.php
 *
 */

require_once('../config.php');
require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->libdir.'/tablelib.php');

require_login();
require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));

$returnurl = "$CFG->wwwroot/$CFG->admin/settings.php?section=manageauths";

$action = optional_param('action', '', PARAM_ACTION);
$auth   = optional_param('auth', '', PARAM_SAFEDIR);

// get currently installed and enabled auth plugins
$authsavailable = get_list_of_plugins('auth');

get_enabled_auth_plugins(true); // fix the list of enabled auths
if (empty($CFG->auth)) {
	$authsenabled = array();
} else {
	$authsenabled = explode(',', $CFG->auth);
}

if (!empty($auth) and !exists_auth_plugin($auth)) {
	print_error('pluginnotinstalled', 'auth', $url, $auth);
}

////////////////////////////////////////////////////////////////////////////////
// process actions

if (!confirm_sesskey()) {
	redirect($returnurl);
}

switch ($action) {
	case 'disable':
		// remove from enabled list
		$key = array_search($auth, $authsenabled);
		if ($key !== false) {
			unset($authsenabled[$key]);
			set_config('auth', implode(',', $authsenabled));
		}

		if ($auth == $CFG->registerauth) {
			set_config('registerauth', '');
		}
		break;

	case 'enable':
		// add to enabled list
		if (!in_array($auth, $authsenabled)) {
			$authsenabled[] = $auth;
			$authsenabled = array_unique($authsenabled);
			set_config('auth', implode(',', $authsenabled));
		}
		break;

	case 'down':
		$key = array_search($auth, $authsenabled);
		// check auth plugin is valid
		if ($key === false) {
			print_error('pluginnotenabled', 'auth', $url, $auth);
		}
		// move down the list
		if ($key < (count($authsenabled) - 1)) {
			$fsave = $authsenabled[$key];
			$authsenabled[$key] = $authsenabled[$key + 1];
			$authsenabled[$key + 1] = $fsave;
			set_config('auth', implode(',', $authsenabled));
		}
		break;

	case 'up':
		$key = array_search($auth, $authsenabled);
		// check auth is valid
		if ($key === false) {
			print_error('pluginnotenabled', 'auth', $url, $auth);
		}
		// move up the list
		if ($key >= 1) {
			$fsave = $authsenabled[$key];
			$authsenabled[$key] = $authsenabled[$key - 1];
			$authsenabled[$key - 1] = $fsave;
			set_config('auth', implode(',', $authsenabled));
		}
		break;

	default:
		break;
}

redirect ($returnurl);

?>
